Automatic auxiliary blast valve for locomotives



Aug. 3 1926. I 1,594,886

T. LANGER AUTOMATIC AUXILIARY BLAST VALVE FOR LOCOMOTIVES Filed Oct. 8,1924 4 R 4e az- CD 4 M w 49.- 4; 4i 4? 9/ l 21 2 V 6 /|;z' m 4s 5 iNVENTOK; 1 T/nmdor Lari9 ATTORNEY atented Aug. .3, 1926.

" UNITED srATas PATENT OFFICE.

- THEODORLANGER, F VIENNA, AUSTRIA.

LUTOILATIC AUXILIARY BLAST VALVE FOR LOCOMOTIVES.

Application filed October 8, 1924, Serial No. 742,445, and in AustriaOctober 13, 1923.

This invention relates to an automatic auxiliary blast valve 'forlocomotives, the valve of which is closed or opened by means of thepiston of a steam-cylinder, in communication with the steam chest of theenboiler.

' 1c in the open or closed osition.

gine, on opening or closing of the regulator of the locomotive, wherebyprovision is .made for regulating at will or shutting off the auxiliaryblast whether the regulator is in the known auxi iary blast valves ofthis kind the regulating and shut-oil valves of the auxiliary blast aredisposed in the admission portion of the steam main of the However thisarrangement possesses the disadvantage that, in case the regulatingvalve is closed-or throttled, the valve of the automatic valve is not atall, or only very slightly, loaded by the steam and is driven 2 upwardwith great force when the regulator of the locomotive is opened andtherefore is damaged very easily. A further disadvantage of the knownautomatic auxiliary blast valves of this kind consists in that in theoperative position of the valve, for example in the position in whichthe auxiliary blast valve is automatically fully opened when shuttingthe regulator of the locomotime, the handle for operating the device isdisposed in the middle between its two to remove these disadvantages andto sim-v ing.

extreme positions, so that the handle has to be turned in one direction,in case it isdesired to throttle or shut ed the fully up erativeauxiliary blast arrangement, or in the other direction in case the lastmentwned arrangement is to be placed in the 0 erative position it theregulator is open, w ich re- ,uires a to and fro movement of the handletoithe prevention of smoke if during the starting of the locomotive itbecomes necessary for the auxiliary blast arrangement to remain inoperation until the beginning of the continuous air draft.

The present invention has for its objects is m communicationwith thesteam-cylinder 4. 6 designates the valve, which is 0 erated by thepiston 5. -At the upper ace the valve 6 is provided with a packin face9, 1n order to establish a steam-tight c osure when seated upon thevalve-seat 11 of the member 10. The valve 6 is furnished with a. seat 7in order to establish a steam-tight closure with a seat 8 when the valveis inthe ppen position. The casing of the automatic valve isin'communication with the casing of a hand-operated valve, whichcomprises three chambers 16, 17 and 18 arranged in axial alinement. Avalve 19 is disposed in the middle chamber 17 and may be adjusted withrespect to two" valveseats 21 and 22 by means of an adjustablevalve-stem 27 adapted to be operated by a hand lever 28. The upper seat22 of the valve 19 preferably cooperates with the seat of an axiallyadjustable member 23, the movement of which is limited by an adjustingscrew 24,

while at the bottom the said valve 19 ter- 7 I minates .in a disc 20,which extends into the bottom chamber 18 and the diameter of whichcorresponds to'the diameter of a channel 25,-establishing communicationbe-..

tween the chambers 18 and 17. In the illustrated position of the valvethe channel 25 is fully open, thus permitting free communi cationbetween chambers 17 and 18. This free passageway, however, may bereduced the lever 28 to a higher position before abutting against theend of the screw 24:. A passage 14; establishes communication be-' tweenthe chamber 12 of the automatic valve valve, both chambers being disposeat the by adjusting the screw 24 so that the mem-. ber 23 may be raisedby the operation of nects the discharge chamber 13 of the firstmentioned valve with the middle chamber 17 of the last mentionedvalve,.so that even if the valve 19 is closed the automatic valve 6 isfully loaded by the steam and always the locomotive.

' The apparatus operates in the following manner v In the illustratedposition of the lever. 28,

the valve 19 rests on the member 23 and the position. On open-.

device is in the startingl ing the regulator of t e locomotive, steam isgently lifted on opening the regulator of I presses the valve 6 onto themember and thus shuts off the passage of the steam from a the branch 1to the branch 2, whereby the auxiliary blast arrangement is stopped. On

closing the regulator the steam-cylinder 4 is emptied with res ct tothesteam chest of the engine and a1 ows the valve 6 to ass into the openposition, so that the auxiliary device is in the fully operativeposition. After closing the regulator the extent of the auxiliary blast'efl'ect is determined by the position of the disc 20 with respect tothe channel which is regulated by the adjustment of the screw 24, sothat the member 23 may be raised to a greater or less height in responseto the operation of the. hand lever 28, as hereinbefore described. Onturning the handle 28 to the ri 'ht hand side the valve 19 isforced-onto the bottom seat 21, whereby the auxiliary blast device isthrottled or shut-off. In case the valve 19 is disposed in a throttlingposition between the two valve-seats 21 and 22, the auxiliary blastdevice remains operative when openthe illustrated position. Thus theadvantage af the present invention consists not only in the most simpleconstruction, but

ing the regulator of the locomotive until. the lever 28 is turned to theleft hand side into also in the possibility of a steam-tightshutting-ofi' of the valve when the regulator is closed, further, inthat the valve 6 is consaid housing forming nication with said inletport, a chamber in communication with said outlet intermediate chamberbetween said inlet and tinuously evenly loaded by steam even if thehand-operated valve is shut and especiallyin that onopening theregulator the auxiha blast effect is continued unhampered until it isstopped by moving. the handlever, into the starting position. v

- I claim 1. An auxiliary blast valve for-locomo-l tives, comprisin ahousing having an inlet port adapted or communication with a source ofsteam supply, an' outlet. port adapted for communication with the auxiliary blast device of the locomotive and a port adapted for communicationwith the steam chest of the locomotive, partitions in a chamber incommuport adapted for communication with. the.

j and outlet chambers be @VfilVE-COIItIOllOd openin v with the other ofsaid rst mentioned openjfirst mentione openinggmeans for adjustingrtand-an outlet chambers, the partition between the inlet and intermediatechambers having two valve-controlled openings, a cylinder incommunication with said steam-chest oommunil catin port, a reciprocableiston in said cylin er, a valve automatical y operable by- .said pistonfor closing one ofsaid openingsi I the partition between theintermediate an outlet chambers being provided with a valve- 1controlled-ofening in axial alinement with the other 0 said firstmentioned openings, an axially adjustable valve seat in said firstmentioned opening, means for adjustin said valve seat, a doub e-actingyalve for c osing I either of said alinedo enings, and manually operable,means or actuating said valve. j 2. An' auxiliary blast valve forlocomotives, comprisin a housing having an inlet 0 port ada ted orcommunication with 0. source 0 adapted for communication with theauxiliary blast device of the locomotive and a operable by said pistonfor closing one ofsai (alienings, the partition between the interme 'ateprovided with a- 1n axial alinement ings, an axiall adjustable valveseat in said said valve seat, a den le-acting valve for closin either ofsaid alined openings, a threa ed stem for operating said double-act ingvalve,and a handleverfor rotating j 1' whereof I hereunto afiix Stem-Intestimony signature.

- 'THEODOR LANGER.

steam supply, an outlet port Q

